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HSTG Newsletter no.1 Page 1(15)
The Newsletter of the HSTG
A Task Group of the International Union of Geological Sciences
Nº 1
Compiled and edited by Lola Pereira and Björn Schouenborg
HSTG Newsletter no.1 Page 2(15)
Contents:
1. Welcome to the HSTG newsletter
2. An overview of HSTG
3. Recent activities
4. Activities in the near future
5. Reports from our board members
6. Calendar
1. Welcome to the HSTG newsletter
Welcome to our new Newsletter! It is our pleasure to share with all of you the involvements
and activities of this Group with the aim that you get implicated with them as much as
possible. We hope to send this newsletter to you once a year and receive feedback from you in
order to improve it every issue!
The Newsletter will only be available electronically, sent to all HSTG members and available
for download at www.globalheritagestone.org .
2. An overview of the HSTG
HSTG is a Task Group, formally established by the International Union of Geological
Sciences (IUGS) in 2011, with an initial administrative Board of Management being
appointed at the 34th International Geological Congress in Brisbane for the period 2012-2016.
HSTG had earlier origins in 2008 as a project within Commission (C-10) - Building Stones
and Ornamental Rocks of the International Association for Engineering Geology and the
Environment (IAEG C-10) that was recognised at its meeting during the 33rd International
Geological Congress in Oslo, Norway.
The first board of the HSTG is made up of:
PRESIDENT
Dr Björn Schouenborg (Sweden)
SECRETARY GENERAL
Associate Prof. Barry J. Cooper (Australia)
VICE PRESIDENTS & BOARD
MEMBERS
Prof. Dolores Pereira (Spain)
Dr Sabina Kramar (Slovenia)
Prof. Jan Elsen (Belgium)
Dr Joseph T. Hannibal (USA)
Prof. Brian R. Pratt (Canada)
Dr Nelson R. Shaffer (USA)
Prof. Fabiano Cabañas Navarro (Brazil)
Prof. M.Jayananda (India)
Dr Hirokazu Kato (Japan)
Dr Phil Paige-Greene (South Africa)
Dr Brian R. Marker (UK)
HSTG Newsletter no.1 Page 3(15)
HSTG retains its link with IAEG C-10 with the HSTG President also being IAEG C-10 Chair
and several events are prepared and executed in collaboration.
The objectives of HSTG are:
To facilitate formal designation of natural stones that have achieved widespread
recognition in human culture (i.e. heritage stones).
To create the “Global Heritage Stone Resource” (GHSR) as an internationally
recognised heritage stone designation.
To promote the adoption and use of heritage stone designation by international and
national authorities.
At present, there are 222 HSTG correspondents from 50 countries.
3. Recent activities
Activities in 2013
HSTG had a very successful year. It continued in its formative phase with the
organisation of the first Heritage Stone Conference as a session at the General
Assembly of European Geoscience Union (EGU conference) in Vienna, Austria, 7-12
April 2013.
See Table 1 for EGU 2013 contributions. The success of the meeting allowed us to compile a
symposium volume on Heritage Stone, with most contributions presented at the EGU. This
Special Publication of the Geological Society of London has already been published on-line
and a hard copy will be available by mid-2015.
One important outreach activity during the Vienna conference was the interview of the HSTG
Secretary General by the British Broadcasting Commission (BBC) with details of the project
being available to be viewed and read at www.bbc.co.uk/news/science-environment-
22097403 and www.bbc.co.uk/news/science-environment-22102933 .
Table 1. Contributions to the EGU 2013 congress
Basis for application of criteria for definition of Global Heritage Stone
Brian Marker
Sierra Nevada serpentinites. An important element in the architectonic heritage of Granada (Spain).
Rafael Navarro, Dolores Pereira, Carlos Rodríguez-Navarro, and Eduardo Sebastián-Pardo
Piedra Pajarilla: A candidate for nomination as Global Heritage Stone Resource from Spain
Dolores Pereira, Ana Gimeno, and Santiago del Barrio
The "Global Heritage Stone Resource": Past, Present and Future
Barry Cooper
Introductory Overview of Stone Heritages in Japan
HSTG Newsletter no.1 Page 4(15)
Hirokazu Kato, Teruki Oikawa, Masayo Fujita, and Shunji Yokoyama
Methods for tracing the origin of white marbles used in antiquity
Walter Prochaska and Silvana Maria Grillo
Bulding and Ornamental Stone in the History of St Petersburg Architecture
Andrey Bulakh
Biofouling of granite-rapakivi in St. Petersburg monuments and in the quarry in Russia and Finland
Dmitry Vlasov, Elena Panova, Elena Alampieva, Elena Olhovaya, Tatyana Popova, Alexey Vlasov, and
Marina Zelenskaya
The Kolmården serpentine marble in Sweden, a building stone found at many levels in the society.
Anders Wikström and Dolores Pereira
Steatite and schist: natural stones built heritage in Brazil as contenders for the Global Heritage Stone Resouce
Antônio Gilberto Costa
The OSMATER project: promotion of stone materials from the Verbano-Cusio-Ossola region (Italy) and the
Canton Ticino (Switzerland).
Alessandro Cavallo and Giovanna Antonella Dino
Drropulli Stone and Gjirokastra World Heritage in Albania
Afat Serjani and Sabina Kramar
Multidisciplinary studies on ancient sandstone quarries of Western Sardinia (Italy).
Silvana Maria Grillo, Carla Del Vais, and Stefano Naitza
White Macael marble: a key element in the architectonic heritage of Andalusia for over 25 centuries
Rafael Navarro, Ana Sol Cruz, Lourdes Arriaga, and José Manuel Baltuille
The relevance of "Santa Pudia" calcarenite: a natural stone to preserve heritage buildings in Andalusia
(Spain)
Rafael Navarro, Eduardo Molina, and José Manuel Baltuille
“Piedra Dorada”: a natural stone as an intrinsic part of two World Heritage Cities in Andalusia (Spain)
Rafael Navarro, Josefina Sánchez-Valverde, and José Manuel Baltuille
The use of local natural stone in construction of St. Petersburg region and south-east Finland
Hannu Luodes, Paavo Härmä, Elena Panova, Heikki Pirinen, and Olavi Selonen
The Significance of Podpe� limestone in the Cultural Heritage of Slovenia
Sabina Kramar, Mojca Bedjanič, Breda Mirtič, Ana Mladenović, Boštjan Rožič, Dragomir Skaberne, and
Nina Zupančič
Portugues Marbles as Stone Heritage
Luis Lopes and Ruben Martins
Welsh Slate: A Candidate for Global Heritage Stone Status
Jana Horak, Terry Hughes, and Graham Lott
The geological heritage of Piedmont Region: Turin a "Stone-Town"
Alessandro Borghi, Daniele Castelli, Emanuele Costa, Anna d'Atri, Giovanna Antonella Dino, Sergio Favero,
Simona Ferrando, Chiara Groppo, Luca Martire, Rosanna Piervittori, Franco Rolfo, Piergiorgio Rossetti, and
Gloria Vaggelli
The Marble Types of Thassos Island through the Ages
Kostas Laskaridis, Michael Patronis, Christos Papatrechas, and Björn Schouenborg
Colmenar limestone as a resource for built heritage
Rafael Fort, Mónica Álvarez de Buergo, MªJosé Varas-Muriel, and Elena Mercedes Pérez-Monserrat
Global stone heritage: larvikite, Norway
Tom Heldal and Rolv Dahl
HSTG Newsletter no.1 Page 5(15)
Villamayor stone (Golden Stone) as a Global Heritage Stone Resource from Salamanca (NW of Spain)
Jacinta Garcia-Talegon, Adolfo Iñigo, and Santiago Vicente-Tavera
Eucisia schist a natural stone from Northern Portugal
Silvia Aires, Cristina Carvalho, and Fernando Noronha
Natural stones of historic and future importance in Sweden
Björn Schouenborg, Jenny Andersson, and Mattias Göransson
Ruschita Romanian marble - 130 years of official exploitation and 130 m depth of architectural beauty around
the word
Valentina Cetean
Preliminary notes about Heritage Stone Resources from Apulia region South Italy
Vincenzo Simeone and Angelo Doglioni
Hungarian travertine: a historic and current stone resource of Central Europe
Ákos Török
Contribution of Portuguese two-mica granites to stone built heritage
Angela Almeida and Arlindo Begonha
A model paper nominating “Portland Stone” from the United Kingdom as a “Global
Heritage Stone Resource” was also published while the Task Group has also approved
Check Lists for describing both a “Global Heritage Stone Resource” and a “Global
Heritage Stone Province”. (see Episodes, 2013)
Our correspondent in Japan Hirokazu Kato proposed at the 48th CCOP Annual
Session that a CCOP Global Stone Heritage Book be compiled and published. The
proposal was warmly received and the meeting recommended Japan to give a proposal
of this issue and to publish a book as the third volume of CCOP Books. The Book
project was approved at the 60th CCOP Steering Committee Meeting in March 2013
in Ubon Ratchathani, Thailand. It was agreed that Dr. Hirokazu Kato, Dr. Yoshihiko
Shimazaki and Dr. Anthony Reedman will serve as Editors of the book. The title of
the book will be "Stone Heritage of East and Southeast Asia" and the content of the
book was tentatively agreed as follows:
Preface by Editors
Message from GSHR
Message from CCOP
Chapter 1: Stone Heritage of Cambodia
Chapter 2: Stone Heritage of Indonesia
Chapter 3: Stone Heritage of Japan
Chapter 4: Stone Heritage of Korea
Chapter 5: Stone Heritage of Malaysia
Chapter 6: Stone Heritage of the Philippines
Chapter 7: Stone Heritage of Papua New Guinea
Chapter 8: Stone Heritage of Thailand
Chapter 9: Stone Heritage of Vietnam
HSTG Newsletter no.1 Page 6(15)
Activities in 2014
The second edition of HSTG session at the EGU 2014 took place on the 28th
of April.
Nineteen contributions were presented, either as posters or oral presentations.
Although less contributions were presented than in the previous EGU edition, the
public interest was greater and the discussion more fruitful. See Table 2 for EGU 2014
contributions.
Table 2. Contributions to the EGU 2014 congress
Porphyry of Russian Empires in Paris
Andrey Bulakh
“Petit Granit”: a Belgian limestone used in heritage, construction and sculpture.
Dolores Pereira, Francis Touneur, Lorenzo Bernáldez, and Ana García Blázguez
"Piedra Franca": the same name for many different natural stones.
Dolores Pereira, Rafael Navarro, and Jose Manuel Baltuille
Bath stone - a possible Global Heritage Stone from England
Brian Marker
Microbial monitoring in treated stone at the Royal Chapel of Granada
Fadwa Jroundi, Guadalupe Pinar, Maria Theresa González-Muñoz, and Katja Sterflinger
The historical and cultural heritage from Brazil: rocks and deterioration patterns
Antônio Costa
Monitoring of the Heat and Moisture Transport through Walls of St. Martin Cathedral Tower in Bratislava
Ľudovít Kubičár, Ján Hudec, Danica Fidríková, Vladimír Štofanik, Peter Dieška, and Viliam Vretenár
Carrara Marble: a nomination for Global Heritage Stone Resource
piero primavori
Characteristic roofing slates from Spain: Mormeau and Los Molinos
Victor Cardenes Van den Eynde, Veerle Cnudde, and Jean Pierre Cnudde
Digitalization of the exceptional building and decorative stones collection of the Natural History Museum
Vienna
Ludovic Ferrière and Christian Steinwender
Limestone types used from the classic Karst region in Slovenia
Sabina Kramar, Breda Mirtič, Ana Mladenović, Boštjan Rožič, Mojca Bedjanič, Jože Kortnik, and Andrej Šmuc
The Dala (Älvdalen) Porphyries from Sweden
Anders Wikström, Lola Pereira, Thomas Lundqvist, and Barry Cooper
Quality assessment of the melanocratic basalt outcrops for the mineral fiber producing, Southern Urals, Russia
Antonino Pisciotta, Boris V. Perevozchikov, Boris M. Osovetsky, Elena A. Menshikova, and Konstantin P.
Kazymov
Berroqueña stone of Madrid (Spain). A traditional and contemporary building stone
David Martin Freire Lista, Rafael Fort, and MªJosé Varas Muriel
“Azul Platino”: another Spanish natural stone to be considered as Global Heritage Stone Resource.
Juan José Tejado, M. Isabel Mota, and Dolores Pereira
“Gris Quintana”: a Spanish granite from the Past into the Future.
HSTG Newsletter no.1 Page 7(15)
Juan José Tejado, M. Isabel Mota, and Dolores Pereira
“Sydney sandstone”: Heritage Stone from Australia
Barry Cooper and Sabina Kramar
Purbeck Stone - A possible Global Heritage Stone from England
Brian Marker
Traces of the heritage arising from the Macelj sandstone
Mateja Golež
Our HSTG Russian member Andrey Bulak
marking in the map where his stone came
from.
Collection of Stones from the World, an
initiative of EGU 2014, where participants
could leave a sample brought from their
country.
A publication for a special issue on “Episodes” has already been compiled with some
of the contributions at EGU 2014. It will be published in June 2015. The following
natural stones will be considered in this issue: Petit Granit and Lede Stone, from
Belgium; Porphyries from Sweden and from Russia; Slates and Alpedrete granite from
Spain; Bath Stone and Purbeck stone from United Kingdom; and Sydney sandstone
from Australia.
The HSTG was represented as well at the IAEG congress in Turín. A session took
place in the frame of our link with the C-10 commission on Building Stones and
Ornamental rocks. Table 3 contains the list of contributions.
HSTG Newsletter no.1 Page 8(15)
Table 3. Contributions to the XII IAEG 2014 congress, C-10 seminar on Building stones and
ornamental rocks
A Global Heritage Stone Province in Association with the UNESCO World Heritage City of Salamanca, Spain
Dolores Pereira and Barry Cooper
Characterization of the Natural Variability of Macael Serpentinite (Verde Macael ) (Almería, South of Spain) for
Their Appropriate Use in the Building Industry
Rafael Navarro, Dolores Pereira, Ana Gimeno, and Santiago del Barrio
Some Examples of Heritage Stones from Australia
Barry Cooper
Granites from south west England - a global heritage stone resource'
Brian Marker
The Karst region of Slovenia: a potential global heritage stone province'
Sabina Kramar
The Natural Stone in the Historic Buildings of the City of Granada (Southern Spain). Features as a Possible
Candidate for the Designation of “ Global Heritage Stone Province”
Rafael Navarro, Josefina Sánchez-Valverde, and José Manuel Baltuille
Petrographic, Physical– Mechanical and Radiological Characterisation of the Rosa Beta Granite (Corsica-
Sardinia Batholith)
S. Cuccuru and A. Puccini
Changes in Marble Quality After Sodium Sulphate Crystallization and Long-Lasting Freeze-Thaw Testing
Tatiana Durmeková, Peter Ružička, Miroslav Hain, and Mária Čaplovičová
Assessment of Potential Natural Stone Deposits
Hannu Luodes, Heikki Sutinen, Paavo Härmä, Heikki Pirinen, and Olavi Selonen
P-T-XCO2 Pseudosection Modelling of Talc-Magnesite Soapstone
Seppo Leinonen
Adnet ‘ Marble’ , Untersberg ‘ Marble’ and Leitha Limestone— Best Examples Expressing Austria’ s Physical
Cultural Heritage
Beatrix Moshammer, Christian Uhlir, Andreas Rohatsch, and Michael Unterwurzacher
The Wiborg Granite Batholith— The Main Production Area for Granite in Finland
Paavo Härmä, Olavi Selonen, and Hannu Luodes
Methods for Evaluating the Natural Stone Weathering Condition in Selected Historical Buildings Within the
Project “ Efficient Use of Natural Stone in the Leningrad Region and South– East Finland”
Nike Luodes, Hannu Luodes, Heikki Pirinen, Paavo Härmä, Heikki Sutinen, Aleksei Shkurin, and Claudio De
Regibus
Granites of the Verbano-Cusio-Ossola District (Piedmont, Northern Italy): Possible Candidates for the
Designation of “ Global Heritage Stone Province” and a Proposal of a Geotouristic Route
Alessandro Cavallo and Giovanna Antonella Dino
Building Stone Evaluation Applied to Weathered Granites— The Example of Amarelo Real Granite (Northern
Portugal)
LMO Sousa and JMM Lourenço
Production of Granitic Press Rollers in Finland
Arto Peltola, Olavi Selonen, and Paavo Härmä
The Uses of Natural Stone in the Building of Canberra, Australia’ s National Capital City
Wolf Mayer
Fire on the Rocks: Heat as an Agent in Ancient Egyptian Hard Stone Quarrying
Tom Heldal and Per Storemyr
Size Effect in Flexural Strength Test on Dimension Stones
HSTG Newsletter no.1 Page 9(15)
Rossana Bellopede, Paola Marini, and Lorenzo Collaro
CE-Marking of Natural Stone— Practical Application and Solutions in Sweden
Linus Brander and Björn Schouenborg
Hierarchical Approaches Toward Safeguarding Heritage Building Stone Resources in England and Wales
Ian A. Thomas and Barry J. Cooper
The Relation Between the Petrographic, Physico-Mechanical Properties and the Use of Some Deposit Paving in
Algeria
Chentout Malika, B. Alloul, and D.J. Belhai
All these contributions have been published in the Proceedings Book edited by Springer:
Engineering Geology for Society and Territory. Volume 5. Urban Geology, Sustainable
Planning and Landscape Exploitation, Part IV Building Stones & Ornamental Rocks—
Resource Evaluation, Technical Assessment, Heritage Designation
A workshop took place the day after our session. 28 people joined the presentation and
following discussion, adding fruitful comments and suggestions for the HSTG management,
activities and other issues related to GHSR. An image of attendees is shown below.
Participants at the IAEG C-10/HSTG workshop in Turin.
Mid conference, a city tour of Turin was arranged to study the local use of building stone. For
this occasion an app had been developed: TOURinSTONES, and can be downloaded from
Google play or Appstore.
A heritage stone session was also organised, 24-25 April 2014, at the North Central
Section meeting of the Geological Society of America in Lincoln, Nebraska under the
title of “Cultural Geology: Capitol Buildings, Heritage Stone, Parks, and more”. There
were nine presentations with Joseph Hannibal and Nelson Shaffer presiding. (See
GSA 2014)
HSTG Newsletter no.1 Page 10(15)
A field trip was also held in association viewing “Building and Ornamental Stones in the
Nebraska State Capital Building”.
The 5th Global Stone Congress was held in Antalya, Turkey, from 22-25 October
2014. Approximately ten papers featured heritage stone in their content. An interim
secretariat for future Global stone congresses was formed and it was decided to
postpone the next event until 2017 in order not to collide with the IGC congress in
Cape Town 2016.
Björn and colleagues at Perge, the ancient Roman city in the eastern part of Antalya.
Global Stone Congress organizers in Antalya
HSTG Newsletter no.1 Page 11(15)
4. Activities in the near future
EGU 2015: We are organizing a third edition of Natural Stone Heritage. Abstract
submission deadline is 7th
of January. EGU 2015
A regional heritage stone conference as part of the North Central Section conference
of the Geological Society of America in Madison, Wisconsin 19-20 May 2015. The
theme will be “Cultural Geology and Geoarchaeology: Millstones, Dimension Stones,
Capitol Buildings, Heritage Stone, and More” GSA 2015 Madison
Geological Society of America, Baltimore 2015. A heritage stone conference is
being planned as a session at the Annual Meeting of Geological Society of America in
Baltimore, Maryland, 1-4 November 2015. Field trips examining the stone heritage of
Baltimore and local stone quarries are being planned. More details will be announced
at the GSA web page. GSA 2015
35th
IGC in Cape Town 2016. The HSTG and IAEG C-10 has submitted a proposal
for a stone seminar/session during this event. We are also trying to arrange a field trip.
More information about the congress can be found on: http://www.35igc.org/
Detailed information on all these activities will be reported in the periodical reports from the
Secretary General.
5. Reports from our board members. Reports from everywhere
Lola Pereira in Oxford
In January 2014, Lola Pereira stayed a week in Oxford, while enjoying an Erasmus exchange
at the University of Birmingham. Staying in Oxford allowed her to visit the Natural History
Museum to see the superb collection of dimension stones and the Museum itself, which is
built using different natural stones that serve as an incredible catalogue. Here she wants to
acknowledge the great help of Professor Paul Smith, Director of the Oxford University
Museum of Natural History, and Monica T. Price, Head of Earth Collections at the Museum.
HSTG Newsletter no.1 Page 12(15)
Interior of Museum of Natural History. The court is surrounded by thirty columns, each made
of a different British natural stone.
In addition Lola visited as well the Department of Geography, where Dr Heather Viles
teaches and has a magnificent laboratory for testing industrial rocks. Heather is tutoring two
Marie Curie fellowships at present, both dealing with subjects that have a strong link to the
HSTG interests. At the moment a second visit by Lola Pereira is organized to identify
possible ways of collaboration and joint contributions.
During this same visit, Lola Pereira gave a seminar at the Department of Geography
University of Birmingham, hosted by Dr Mary Thornbush. Mary is a member of the
IAGeoethics, linked to the IUGS. Attendance to the seminar was important in number and in
the profile of participants: many retired members of the Department assisted and were
interested in following HSTG activities. In fact a Master´s student subsequently contacted
Lola Pereira asking for material to complete his Master´s thesis.
Contacts with India
Besides the fluent and friendly connection the HSTG has with India, a new strong link is
being developed with the Stone Technology Center in Ahmedabad. The Director of the Center
Vikram Rastogi has recently showed his interest in a proposal to study serpentinites by the
research group of Lola Pereira at the University of Salamanca. This proposal was sent to the
HSTG Newsletter no.1 Page 13(15)
Spanish Economy Ministry requesting funding and including an Expression-of-Interest letter
from Mr Rastogi, together with other research and institutional correspondence. Furthermore
a Memorandum of Understanding has been signed between the International Stone Research
Centre and the University of Salamanca.
Report from Luis Lopes, Portugal
Luis Lopes was in Mozambique during the Spring of 2014 where he had the chance of
discussing the work of HSTG. He has been promoting the Group during the past couple of
years not only in Mozambique, but also in USA (GSA meeting in Denver), Turkey (Global
Stone in Antalya) and Argentina, at the National Geological Congress where he had been
invited by the organization.
Report from Lidia Catarino, Portugal
The First Meeting European Quarry Landscapes took place, 30- 31 October 2014, in Gran
Hotel Botánicos, Teruel, Aragón, Spain, dedicated to the international cooperation of
recovering historic quarries and landscapes. The meeting was organized by the European
Quarry Landscapes Network. This meeting was part of the LIFE + Programme of the
European Commission, the financial instrument for the environment of the European Union.
European quarries are rich cultural landscapes which also enjoy special natural conditions and
habitats, and rich geological and fossil evidence. Stone use occurs from the beginning of
European art and architecture, and quarries are vital for the conservation of this heritage.
Some quarries have been worked since classical times, providing the stone for Europe’s
greatest buildings and urban settings. Examples of quarries from Austria, France, Germany,
Portugal, Spain (Madrid, Menorca, Salamanca) and UK were presented.
From the Teruel quarries came the clay to make the bricks and tiles to build the 12th century
Mudéjar art of Aragon, now a World Heritage site. Influenced by Islamic traditions and
European Gothic styles, this building tradition is characterized by an extremely refined and
inventive use of bricks and glazed tiles. The quarries of Teruel were visited by the participants
of the meeting guided by the organization and giving all the information about the works in
progress in order to recover the landscape and reuse the place for the citizens of the city.
The panel discussion about the TICCIH Thematic Report on the inscription of quarry
landscapes on the World Heritage List was very fruitful with different opinions. The term
“quarry” was discussed because, in some opinions, quarry landscapes must not be restrictive
to the quarry itself but include other mining aspects. The quarries must be preserved but in
HSTG Newsletter no.1 Page 14(15)
conditions to permit the exploitation if necessary. In some countries (for example Austria) it
is common sense to allow this. In others it is restrictive and there can be interference. Also
some of the quarries are still in operation and must remain operative thus providing people
with work and advantages to the local economy.
The Declaration of Participation and Commitment to the European Network of Quarry
Landscapes was signed by several of the participants with minimal revision.
Assistants to the First meeting of the European Network of Quarry Landscapes
Report from Hirokazu Kato, Japan
Our Japanese Board member reported on his new situation in retirement from the National
Institute of Advanced Industrial Science and Technology (AIST). He still maintains working
connections to the Institute and works as consultant for OYO corporation. Dr Kato is the
responsible coordinator of a Special Book on natural stones, elaborated after the 48th Annual
Session of CCOP that was held in Langkawi, Malaysia on 5-8 November 2012. It was
organized by the Minerals and Geoscience Department Malaysia (JMG), Ministry of Natural
Resources and Environment (NRE) Malaysia and the Technical Secretariat of CCOP (CCOP
TS) in cooperation with PETRONAS. There were 109 delegates attending the Session from
the following Member Countries - Cambodia, China, Indonesia, Japan, Republic of Korea,
Lao PDR, Malaysia, Papua New Guinea, Philippines, Singapore, Thailand, and Vietnam
6. Calendar
Please, visit regularly the calendar at our web page. Information will be updated periodically,
with important meetings and interesting activities for the HSTG
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